30 Day Back Ext. Challenge!
Intersect Health & Fitness iPhoneiPadiPod touch
30 Day Back Ext. Challenge! is a free Health & Fitness app for iPhone and iPad by Intersect. Rated 5.0/5 from 6 ratings. Requires iOS 16.6.
- Rating
- 5.0
- 6 ratings
- Price
- Free
- on the App Store
- Size
- 21 MB
- Age 17+
- Updated
- Jan 29
- 2026 · v8.0.0
Screenshots
About 30 Day Back Ext. Challenge!
Supports Back Extension for 30 day challenge. Main function is to count Back Extension once a day. Main Function ・Count Back Extension. ・Achievement days management. ・Notifications. ・Record Active Energy and Workouts to Apple Health. How to use ・Put iPhone on floor. ・Tap screen. ・Keep your face close to iPhone screen. (Upper part) * ・Or count on iPhone screen tap. Active Energy ・Ex. METs 3.5, Weight 50 kg, Time 10 min. (3.5 - 1) x 50 x (10 / 60) x 1.05 = 21.86 kcal. Optional permission requests ・Apple Health: It is used to record data in Apple Health. ・Tracking: It is used to deliver personalized ads to you. ・Notifications: It is used to sending notifications. Languages ・Japanese, English. *Dynamic Island devices not supported
Ratings & reviews
5.0
6 ratings
What’s new
Version 8.0.0 · Updated January 29, 2026
Minor bug fixes.
App privacy
The developer, Intersect, reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location: Coarse Location
- Identifiers: Device ID
- Usage Data: Product Interaction, Advertising Data, Other Usage Data
- Diagnostics: Crash Data, Performance Data, Other Diagnostic Data
- Other Data: Other Data Types
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Location: Coarse Location
- Identifiers: Device ID
- Usage Data: Product Interaction, Advertising Data, Other Usage Data
- Diagnostics: Crash Data, Performance Data, Other Diagnostic Data
- Other Data: Other Data Types
- Health & Fitness: Health, Fitness
Used for: Third-Party Advertising, Analytics, App Functionality
Alternatives to 30 Day Back Ext. Challenge!
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| 30 Day Back Ext. Challenge! | 5.0 / 5 (6 ratings) | Free | January 29, 2026 | |
| Yoga for Beginner Weight Loss | – | Free | Dec 21, 2025 | Compare |
| 30 Day Toned Arm Challenge | 4.6 / 5 (32) | Free | Dec 19, 2025 | Compare |
| Step Counter Caho Cute Walking | 4.6 / 5 (133) | Free | Oct 3, 2026 | Compare |
| Plank Challenge: Core Workout | 4.7 / 5 (471) | Free | Sep 29, 2026 | Compare |
| 30 Day Fit Challenge Workout | 4.6 / 5 (496) | Free | Jan 8, 2026 | Compare |
| 30 Day Ab Workout Challenge | 4.7 / 5 (668) | Free | Oct 15, 2026 | Compare |